US20110154855A1 - Evaporator with cool storage function - Google Patents

Evaporator with cool storage function Download PDF

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Publication number
US20110154855A1
US20110154855A1 US12/926,930 US92693010A US2011154855A1 US 20110154855 A1 US20110154855 A1 US 20110154855A1 US 92693010 A US92693010 A US 92693010A US 2011154855 A1 US2011154855 A1 US 2011154855A1
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US
United States
Prior art keywords
cool storage
storage material
refrigerant flow
evaporator
portions
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Abandoned
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US12/926,930
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English (en)
Inventor
Hironaka Sasaki
Naohisa Higashiyama
Osamu Kamoshida
Motoyuki Takagi
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Mahle Behr Thermal Systems Japan Ltd
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Showa Denko KK
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Assigned to SHOWA DENKO K.K. reassignment SHOWA DENKO K.K. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HIGASHIYAMA, NAOHISA, KAMOSHIDA, OSAMU, SASAKI, HIRONAKA, TAKAGI, MOTOYUKI
Publication of US20110154855A1 publication Critical patent/US20110154855A1/en
Assigned to KEIHIN THERMAL TECHNOLOGY CORPORATION reassignment KEIHIN THERMAL TECHNOLOGY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SHOWA DENKO K.K.
Assigned to KEIHIN THERMAL TECHNOLOGY CORPORATION reassignment KEIHIN THERMAL TECHNOLOGY CORPORATION CORRECTIVE ASSIGNMENT TO CORRECT THE RECEIVING PARTY'S ADDRESS PREVIOUSLY RECORDED AT REEL: 028982 FRAME: 0429. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: SHOWA DENKO K.K.
Assigned to KEIHIN THERMAL TECHNOLOGY CORPORATION reassignment KEIHIN THERMAL TECHNOLOGY CORPORATION CORRECTIVE ASSIGNMENT TO CORRECT THE INCORRECT APPL. NO. 13/064,689 PREVIOUSLY RECORDED AT REEL: 028982 FRAME: 0429. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: SHOWA DENKO K.K.
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/24—Storage receiver heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0004—Particular heat storage apparatus
    • F28D2020/0013—Particular heat storage apparatus the heat storage material being enclosed in elements attached to or integral with heat exchange conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0085—Evaporators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the present invention relates to an evaporator with a cool storage function for use in a car air conditioner for a vehicle in which an engine serving as a drive source for a compressor is temporarily stopped when the vehicle is stopped.
  • FIGS. 1 and 2 will be referred to as “upper” and “lower,” respectively.
  • an ordinary car air conditioner has a problem in that, when an engine of an automobile in which the air conditioner is mounted is stopped, a compressor driven by the engine is stopped, and supply of refrigerant to an evaporator stops, whereby the cooling capacity of the air conditioner sharply drops.
  • imparting a cool storage function to the evaporator has been considered, to thereby enable cooling of a vehicle compartment by making use of cool stored in the evaporator, when the compressor stops as a result of stoppage of the engine.
  • the proposed evaporator includes a plurality of sets each including two flat refrigerant flow tubes whose width direction coincides with an air flow direction and which are spaced apart from one another in the air flow direction, the plurality of sets being disposed at intervals in a direction perpendicular to the width direction of the refrigerant flow tubes.
  • a flat cool storage material container whose width direction coincides with the air flow direction and which is filled with a cool storage material is disposed on one side of each set including two refrigerant flow tubes such that the cool storage material container extends over the refrigerant flow tubes adjacent to each other in the air flow direction, and is brazed to the refrigerant flow tubes.
  • the cool storage material container has a constant dimension in the thickness direction over the entire cool storage material container.
  • Assemblies each composed of a set of refrigerant flow tubes arranged in the air flow direction and a cool storage material container brazed to the set of refrigerant flow tubes are disposed at intervals in the direction perpendicular to the width direction of the refrigerant flow tubes.
  • a space between adjacent assemblies serves as an air-passing clearance, and an outer fin is disposed in the air-passing clearance and is brazed to the corresponding refrigerant flow tubes and the corresponding cool storage material container.
  • the evaporator having a cool storage function disclosed in the publication, when an increase in the amount of the cool storage material in the cool storage material container is desired in order to improve the cool storage performance, the lengths of the cool storage material containers and the refrigerant flow tubes must be increased, and the container height (dimension with respect to the thickness direction) of the cool storage material containers must be increased over the entirety thereof.
  • the container height of the cool storage material container is increased over the entirety thereof, a longer time is needed so as to cool the cool storage material.
  • cooling performance at the time of start of cooling operation drops. Further, when the container height of the cool storage material containers is increased over the entirety thereof without changing the dimension of the heat exchange core section of the evaporator with a cool storage function, the air passage area of each air-passing clearance decreases, and air passage resistance increases, whereby the cooling performance of the evaporator drops.
  • An object of the present invention is to solve the above problems and to provide an evaporator with a cool storage function whose size and weight can be reduced as compared with the evaporator with a cool storage function described in Japanese Patent No. 4043776, which can efficiently cool a cool storage material, and which can suppress an increase in air passage resistance.
  • the present invention comprises the following modes.
  • An evaporator with a cool storage function comprising a plurality of flat refrigerant flow tubes disposed in parallel such that the refrigerant flow tubes extend vertically, the width direction of the refrigerant flow tubes coincides with an air flow direction, and the refrigerant flow tubes are spaced apart from one another, and a plurality of flat cool storage material containers each of which contains a cool storage material and is disposed on one side of the corresponding refrigerant flow tube such that the cool storage material container extends vertically, the width direction of the cool storage material container coincides with the air flow direction, and the cool storage material container is in thermal contact with the corresponding refrigerant flow tubes, wherein
  • each of the cool storage material containers includes a container body in thermal contact with the corresponding refrigerant flow tube, and an internal-volume-increasing portion which extends from the container body toward the upstream side or downstream side with respect to the air flow direction, which projects outward, with respect to the air flow direction, from the refrigerant flow tube, and which is greater in dimension in a thickness direction than the container body;
  • each of the cool storage material containers includes an inner fin disposed therein and extending from the container body to the internal-volume-increasing portion.
  • An evaporator with a cool storage function according to par. 1) wherein the inner fin is a corrugated fin having crest portions extending in the air flow direction, trough portions extending in the air flow direction, and connection portions connecting the crest portions and the trough portions.
  • the inner fin is a staggered fin composed of a plurality of wavy strips which are arranged in the air flow direction and are unitarily connected to one anther, each of the strips having crest portions extending in the air flow direction, trough portions extending in the air flow direction, and connection portions connecting the crest portions and the trough portions, wherein the crest portions and trough portions of one of two strips adjacent to each other in the air flow direction are vertically shifted in position from those of the other of the two strips.
  • An evaporator with a cool storage function according to par. 1), wherein the refrigerant flow tubes and the cool storage material containers are formed separately; a plurality of assemblies each composed of a refrigerant flow tube and a cool storage material container whose container body is brazed to the refrigerant flow tube are disposed at intervals in a direction perpendicular to the width direction of the refrigerant flow tubes; spaces each formed between adjacent assemblies serve as air-passing clearances; outer fins are disposed in the air-passing clearances; portions of the outer fins on the side toward the internal-volume-increasing portions of the cool storage material containers project outward, with respect to the air flow direction, from the refrigerant flow tubes; and the outer fins are brazed to opposite surfaces of the internal-volume-increasing portions of the cool storage material containers.
  • each of the cool storage material containers includes a container body in thermal contact with the refrigerant flow tubes, and an internal-volume-increasing portion which extends from the container body toward the upstream side or downstream side with respect to the air flow direction, which projects outward, with respect to the air flow direction, from the refrigerant flow tube, and which is greater in dimension in a thickness direction than the container body.
  • the amount of the cool storage material charged into the cool storage material containers can be increased without increasing the lengths of the refrigerant flow tubes and the cool storage material containers, or increasing the container height (the dimension in the thickness direction) of the cool storage material containers over the entirety thereof, as in the evaporator with a cool storage function described in Japanese Patent No. 4043776. Accordingly, the size and weight of the evaporator can be reduced, as compared with the evaporator with a cool storage function described in Japanese Patent No. 4043776 in which the container height of the cool storage material containers is constant over the entirety thereof.
  • the time required to cool the cool storage material can be shortened as compared with the case where the container height is increased in the evaporator with a cool storage function described in Japanese Patent No. 4043776 in which the container height of the cool storage material containers is constant over the entirety thereof. Therefore, a drop in the cooling performance at the start of cooling operation is suppressed.
  • an inner fin extending from the container body to the internal-volume-increasing portion is disposed in each cool storage material container, the cool storage material within the internal-volume-increasing portion is cooled quickly. Accordingly, the cool storage material within the cool storage material containers can be cooled efficiently.
  • the internal-volume-increasing portion extends from the container body toward the upstream side or downstream side with respect to the air flow direction and projects outward, with respect to the air flow direction, from the refrigerant flow tube. Therefore, even in the case where a plurality of assemblies each composed of a refrigerant flow tube and a cool storage material container whose container body is in thermal contact with the refrigerant flow tube are disposed at intervals in a direction perpendicular to the width direction of the refrigerant flow tubes, and spaces each formed between adjacent assemblies serve as air-passing clearances, the amount of the cool storage material charged into the cool storage material containers can be increased without changing the dimensions of the heat exchange core section.
  • the interiors of the cool storage material containers communicate with one another at the internal-volume-increasing portions thereof. Therefore, through formation of a cool-storage-material charging opening in the internal-volume-increasing portion of one cool storage material container and an air bleeding opening in the internal-volume-increasing portion of another cool storage material container, an operation of charging the cool storage material into the mutually connected cool storage material containers becomes easier.
  • the cool storage material when the cool storage material is charged from the internal-volume-increasing portion into the cool storage material container, the cool storage material having entered the internal-volume-increasing portion of the cool storage material container reaches the container body via spaces between adjacent connection portions of the inner fin. Therefore, the operation of charging the cool storage material can be readily performed.
  • a plurality of assemblies each composed of a refrigerant flow tube and a cool storage material container whose container body is brazed to the refrigerant flow tube are disposed at intervals in a direction perpendicular to the width direction of the refrigerant flow tubes; spaces each formed between adjacent assemblies serve as air-passing clearances; outer fins are disposed in the air-passing clearances; portions of the outer fins on the side toward the internal-volume-increasing portions of the cool storage material containers project outward, with respect to the air flow direction, from the refrigerant flow tubes; and the outer fins are brazed to opposite surfaces of the internal-volume-increasing portions of the cool storage material containers.
  • the internal-volume-increasing portion is provided on the downstream side of the container body. Therefore, the internal-volume-increasing portion into which a large amount of the cool storage material is charged is present at a position at which air passing through the air-passing clearances has a lowered temperature. Accordingly, the cool storage material within the cool storage material containers can be cooled efficiently, whereby cool storage performance is improved.
  • FIG. 1 is a partially cut-away perspective view showing the overall structure of an evaporator with a cool storage function according to the present invention
  • FIG. 2 is a partially omitted enlarged sectional view taken along line A-A of FIG. 1 ;
  • FIG. 3 is an enlarged sectional view taken along line B-B of FIG. 2 ;
  • FIG. 4 is an enlarged sectional view taken along line C-C of FIG. 2 ;
  • FIG. 5 is a perspective view showing a plurality of cool storage material containers united together
  • FIG. 6 is an exploded perspective view showing a single cool storage material container.
  • FIG. 7 is an exploded perspective view corresponding to FIG. 6 and showing a modification of the cool storage material container.
  • the downstream side with respect to the air flow direction (a direction represented by arrow X in FIGS. 1 to 4 ) will be referred to as the “front,” and the opposite side as the “rear.”
  • the left-hand and right-hand sides as viewed rearward from the front side; i.e., the left-hand and right-hand sides of FIG. 1 will be referred to as “left” and “right,” respectively.
  • aluminum encompasses aluminum alloys in addition to pure aluminum.
  • FIG. 1 shows the overall configuration of an evaporator with a cool storage function according to the present invention
  • FIGS. 2 to 6 show the configurations of essential portions of the evaporator.
  • an evaporator with a cool storage function 1 includes a first header tank 2 and a second header tank 3 formed of aluminum and disposed apart from each other in the vertical direction such that they extend in the left-right direction; and a heat exchange core section 4 provided between the two header tanks 2 and 3 .
  • the first header tank 2 includes a refrigerant inlet header section 5 located on the front side (downstream side with respect to the air flow direction); and a refrigerant outlet header section 6 located on the rear side (upstream side with respect to the air flow direction) and united with the refrigerant inlet header section 5 .
  • a refrigerant inlet 7 is provided at the right end of the refrigerant inlet header section 5
  • a refrigerant outlet 8 is provided at right end of the refrigerant outlet header section 6 .
  • the second header tank 3 includes a first intermediate header section 9 located on the front side, and a second intermediate header section 11 located on the rear side and united with the first intermediate header section 9 .
  • the respective interiors of the first and second intermediate header sections 9 and 11 of the second header tank 3 are connected together via a communication member 12 which extends across and is brazed to the right ends of the intermediate header sections 9 and 11 and which has a flow passage formed therein.
  • the heat exchange core section 4 includes a plurality of sets 14 each composed of a plurality of (two in the present embodiment) flat refrigerant flow tubes 13 formed of aluminum extrudate.
  • the refrigerant flow tubes 13 extend in the vertical direction, and are disposed such that their width direction coincides with the front-rear direction and they are spaced apart from each other in the front-rear direction.
  • the plurality of sets 14 are disposed at predetermined intervals in the left-right direction (the direction perpendicular to the width direction of the refrigerant flow tubes 13 ).
  • a flat cool storage material container 15 formed of aluminum and filled with a cool storage material (not illustrated) is disposed on one side (the left side surface in the present embodiment) of each set 14 composed of two refrigerant flow tubes 13 .
  • the cool storage material container 15 extends in the vertical direction, and is disposed such that its width direction coincides with the front-rear direction.
  • the cool storage material container 15 extends over the two refrigerant flow tubes 13 of each set 14 .
  • the plurality of assemblies 16 are disposed at predetermined intervals in the left-right direction. Spaces each formed between adjacent assemblies 16 serve air-passing clearances 17 . Outer fins 18 formed of aluminum are disposed in the air-passing clearances 17 , and are brazed to the corresponding refrigerant flow tubes 13 and the corresponding cool storage material containers 15 . Further, the outer fin 18 formed of aluminum is disposed on the outer sides of the assemblies 16 (each composed of the refrigerant flow tubes 13 of each set 14 and the corresponding cool storage material container 15 ) located at the left and right ends, respectively.
  • each of the outer fins 18 is a corrugated fin having crest portions extending in the front-rear direction, trough portions extending in the front-rear direction, and connection portions connecting the crest portions and the trough portions.
  • a side plate 19 formed of aluminum is disposed on the outer side of each of the outer fins 18 located at the left and right ends, respectively, and is brazed to the corresponding outer fin 18 .
  • the air-passing clearance 17 is also formed between the side plate 19 at the left end and the assembly 16 at the left end and between the side plate 19 at the right end and the assembly 16 at the right end.
  • each cool storage material container 15 includes a container body 21 and an internal-volume-increasing portion 22 .
  • the container body 21 is located rearward of the front edges of the refrigerant inlet header section 5 and the first intermediate header section 9 , and is brazed to the front and rear refrigerant flow tubes 13 of the corresponding set 14 .
  • the internal-volume-increasing portion 22 extends from the front edge of the container body 21 such that the volume-increasing portion 22 projects frontward from the front edges of the refrigerant inlet header section 5 and the first intermediate header section 9 .
  • the dimension of the internal-volume-increasing portion 22 as measured in the thickness direction (left-right direction) is greater than that of the container body 21 .
  • the dimension of the container body 21 as measured in the left-right direction is constant over the entirety thereof.
  • the dimension of the internal-volume-increasing portion 22 as measured in the left-right direction is equal to the sum of a tube height, which is the dimension of the refrigerant flow tubes 13 as measured in the thickness direction (left-right direction) and the dimension of the container body 21 of each cool storage material container 15 as measured in the thickness direction.
  • the internal-volume-increasing portion 22 is swelled rightward only in relation to the container body 21 , and the left side surface of the internal-volume-increasing portion 22 is flush with the left side surface of the container body 21 .
  • An inner fin 23 which is formed of aluminum and which extends from the rear edge of the container body 21 to the front end of the internal-volume-increasing portion 22 is disposed in each cool storage material container 15 such that the inner fin 23 extends over substantially the entire vertical length of the container body 21 .
  • the inner fin 23 is a corrugated fin having crest portions 23 a extending in the front-rear direction, trough portions 23 b extending in the front-rear direction, and connection portions 23 c connecting the crest portions 23 a and the trough portions 23 b (see FIG. 6 ).
  • the fin height of the inner fin 23 is constant over the entire inner fin 23 .
  • the inner fin 23 is brazed to the inner surfaces of the left-side walls of the container body 21 and the internal-volume-increasing portion 22 of the cool storage material container 15 , and is brazed to the inner surface of the right-side wall of the container body 21 .
  • a communication hole 26 formed in a swelled end wall portion of each of the tank-forming portion 25 establishes communication between the interiors of the tank-forming portion 25 of the internal-volume-increasing portions 22 of adjacent cool storage material containers 15 .
  • the upper tank-forming portion 25 of the internal-volume-increasing portions 22 of all the cool storage material containers 15 form an upper communication tank 27
  • the lower tank-forming portion 25 of the internal-volume-increasing portions 22 of all the cool storage material containers 15 form a lower communication tank 27 .
  • the interiors of all the cool storage material containers 15 are connected together via the upper and lower communication tanks 27 .
  • a cool-storage-material charging opening is formed in one of the upper and lower communication tanks 27
  • an air-bleeding opening is formed in the other of the upper and lower communication tanks 27 .
  • a cool storage material is charged into all the cool storage material containers 15 via the cool-storage-material charging opening.
  • the cool storage material first enters the internal-volume-increasing portion 22 of each cool storage material container 15 , and then enters the container body 21 thereof through spaces between the adjacent connection portions 23 c of the corresponding inner fin 23 .
  • the cool-storage-material charging opening and the air-bleeding opening are closed by appropriately means.
  • Examples of the cool storage material to be charged into the cool storage material containers 15 include a water-based cool storage material and a paraffin-based cool storage material having an adjusted freezing point of about 3 to 10° C. Further, preferably, the amount of the cool storage material charged into the cool storage material containers 15 is determined so that the cool storage material fills all the cool storage material containers 15 up to their upper ends.
  • each cool storage material container 15 is composed of two generally rectangular, vertically elongated aluminum plates 28 and 29 brazed together along their peripheral edge portions. Both the aluminum plates 28 and 29 are formed from an aluminum brazing sheet having a brazing material layer on each of opposite sides thereof, and have the same external shape when they are viewed from the left and right sides, respectively.
  • the left-hand aluminum plate 28 which partially constitutes the cool storage material container 15 , includes a first swelled portion 31 for forming the container body 21 , a second swelled portion 32 for forming the internal-volume-increasing portion 22 , and third swelled portions 33 for forming the tank-forming portions 25 .
  • the first swelled portion 31 accounts for the greater part of the aluminum plate 28 , excluding a front portion thereof, and is swelled leftward.
  • the second swelled portion 32 which extends frontward from the first swelled portion 31 , is swelled leftward, and has the same swelling height as the first swelled portion 31 .
  • the third swelled portions 33 are provided at the upper and lower ends of the second swelled portion 32 , are swelled leftward, and have a swelling height greater than that of the second swelled portion 32 .
  • the above-mentioned communication holes 26 are formed on the swelled end walls of the third swelled portions 33 of the left-hand aluminum plate 28 of each cool storage material container 15 , excluding the cool storage material container 15 at the left end.
  • the right-hand aluminum plate 29 which partially constitutes the cool storage material container 15 , includes a flat portion 34 for forming the container body 21 , a first swelled portion 35 for forming the internal-volume-increasing portion 22 , and second swelled portions 36 for forming the tank-forming portions 25 .
  • the flat portion 34 accounts for the greater part of the aluminum plate 29 , excluding a front portion thereof.
  • the first swelled portion 35 which extends frontward from the flat portion 34 , is swelled rightward.
  • the second swelled portions 36 are provided at the upper and lower ends of the first swelled portion 35 , are swelled rightward, and have a swelling height greater than that of the first swelled portion 35 .
  • the above-mentioned communication holes 26 are formed on the swelled end walls of the second swelled portions 36 of the right-hand aluminum plate 29 of each cool storage material container 15 , excluding the cool storage material container 15 at the right end.
  • the two aluminum plates 28 and 29 are assembled and brazed together so that the openings of the swelled portions 32 and 35 face each other, the openings of the swelled portions 33 and 36 face each other, and the opening of the first swelled portion 31 is closed by the flat portion 34 .
  • the cool storage material container 15 is formed.
  • the tank formation portions 25 of two adjacent cool storage material containers 15 are brazed to each other such that the communication holes 26 of the third swelled portions 33 communicate with the communication holes 26 of the second swelled portions 36 .
  • each outer fin 18 projects frontward from the front refrigerant flow tubes 13 .
  • a portion of the outer fin 18 which portion projects frontward from the front refrigerant flow tubes 13 , is brazed to the left side surface of the internal-volume-increasing portion 22 of the cool storage material container 15 located on the right side of the outer fin 18 , and is brazed to the right side surface of the internal-volume-increasing portion 22 of the cool storage material container 15 located on the left side of the outer fin 18 .
  • the above-described evaporator 1 with a cool storage function constitutes a refrigeration cycle, in combination with a compressor driven by an engine of a vehicle, a condenser (refrigerant cooler) for cooling the refrigerant discharged from the compressor, and an expansion valve (pressure-reducing unit) for reducing the pressure of the refrigerant having passed through the condenser.
  • the refrigeration cycle is installed, as a car air conditioner, in a vehicle, such as an automobile, which temporarily stops the engine, which serves as a drive source of the compressor, when the vehicle is stopped.
  • two-phase refrigerant (a mixture of vapor refrigerant and liquid refrigerant) having been compressed by the compressor and having passed through the condenser and the expansion valve passes through the refrigerant inlet 7 , and enters the inlet header section 5 of the evaporator 1 .
  • the refrigerant then passes through all the front refrigerant flow tubes 13 , and enters the first intermediate header section 9 .
  • the refrigerant having entered the first intermediate header section 9 passes through the communication member 12 , and enters the second intermediate header section 11 .
  • the refrigerant passes through all the rear refrigerant flow tubes 13 , enters the outlet header section 6 , and flows out via the refrigerant outlet 8 .
  • the refrigerant performs heat exchange with air passing through the air-passing clearances 17 , and flows out of the refrigerant flow tubes 13 in a vapor phase.
  • each cool storage material container 15 is cooled by the refrigerant flowing through the refrigerant flow tubes 13 , and cool of the cooled cool storage material within the container body 21 is transferred to the cool storage material within the internal-volume-increasing portion 22 of the cool storage material container 15 via the inner fin 23 .
  • the cool storage material within the internal-volume-increasing portion 22 of each cool storage material container 15 is cooled by air having been cooled by the refrigerant while passing through the air-passing clearances 17 . As a result, cool is stored in the entire cool storage material within the cool storage material container 15 .
  • the cool stored in the cool storage material within the container body 21 and the internal-volume-increasing portion 22 of each cool storage material container 15 is transferred to the left side walls of the container body 21 and the internal-volume-increasing portion 22 via the corresponding inner fin 23 , and then transferred to air passing through the corresponding air-passing clearance 17 via the outer fin 18 brazed to the left side surface of the cool storage material container 15 .
  • each cool storage material container 15 is transferred to the right side wall of the container body 21 via the corresponding inner fin 23 , and then transferred from the right side surface of the container body 21 to air passing through the corresponding air-passing clearance 17 via the corresponding refrigerant flow tubes 13 and the outer fin 18 brazed to the refrigerant flow tubes 13 .
  • each cool storage material container 15 is transmitted from the right side surface of the internal-volume-increasing portion 22 to the air passing through the corresponding air-passing clearances 17 via the outer fin 18 brazed to the right side surface of the internal-volume-increasing portion 22 . Accordingly, even when the temperature of wind having passed through the evaporator 1 increases, the wind is cooled, so that a sharp drop in the cooling capacity can be prevented.
  • each of the refrigerant flow tubes of the evaporator with a cool storage function may be provided in a flat hollow body formed by two aluminum plates brazed together along their peripheral edge portions, as in the case of a so-called laminate-type evaporator. That is, each of the refrigerant flow tubes may be formed between the two aluminum plates which were swelled so as to constitute a flat hollow body.
  • FIG. 7 shows a modification of the cool storage material container.
  • a staggered inner fin 41 formed of aluminum is disposed in the cool storage material container 40 such that the inner fin 41 extends from the rear end of the container body 21 to the front end of the internal-volume-increasing portion 22 , and extends over substantially the entire vertical length of the container body 21 .
  • the inner fin 41 is formed by means of unitarily connecting a plurality of wavy strips 42 which are arranged in the air flow direction and each of which has crest portions 42 a extending in the front-rear direction (the air flow direction), trough portions 42 b extending in the front-rear direction, and connection portions 42 c connecting the crest portions 42 a and the trough portions 42 b.
  • the crest portions 42 a and trough portions 42 b of one of two strips 42 adjacent to each other in the front-rear direction are vertically shifted in position from those of the other of the two strips 42 .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
US12/926,930 2009-12-25 2010-12-17 Evaporator with cool storage function Abandoned US20110154855A1 (en)

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JP2009-294039 2009-12-25
JP2009294039 2009-12-25
JP2010-199796 2010-09-07
JP2010199796A JP5674388B2 (ja) 2009-12-25 2010-09-07 蓄冷機能付きエバポレータ

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JP (1) JP5674388B2 (enExample)
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US20120042687A1 (en) * 2010-08-23 2012-02-23 Showa Denko K.K. Evaporator with cool storage function
US20130047663A1 (en) * 2011-08-31 2013-02-28 Keihin Thermal Technology Corporation Evaporator with cool storage function
US20130087316A1 (en) * 2011-10-06 2013-04-11 Visteon Global Technologies, Inc Thermal energy exchanger for a heating, ventilating, and air conditioning system
US20130105126A1 (en) * 2011-10-28 2013-05-02 Visteon Global Technologies, Inc. Thermal energy exchanger for a heating, ventilating, and air conditioning system
EP2636980A1 (en) * 2012-03-06 2013-09-11 Delphi Automotive Systems Luxembourg SA Heat exchanger with two refrigerants
EP2653329A1 (en) * 2012-04-20 2013-10-23 Delphi Technologies, Inc. Evaporator for air conditioning with phase change material for a thermal syphon operation mode
US20140069136A1 (en) * 2011-05-04 2014-03-13 Halla Visteon Climate Control Corp. Cold-storage heat exchanger
US20140174121A1 (en) * 2012-12-25 2014-06-26 Keihin Thermal Technology Corporation Evaporator with cool storage function
WO2014187317A1 (zh) * 2013-05-22 2014-11-27 杭州工电能源科技有限公司 一种相变蓄热装置、应用该装置的太阳能热利用系统及运行方式
CN104406425A (zh) * 2014-12-10 2015-03-11 浙江大学 一种基于热介质流量的管翅式散热器
CN104406424A (zh) * 2014-12-10 2015-03-11 浙江大学 一种基于热介质温度的管翅式散热器
US20150068718A1 (en) * 2012-04-02 2015-03-12 Denso Corporation Evaporator
US20150241080A1 (en) * 2014-02-21 2015-08-27 Keihin Thermal Technology Corporation Air-conditioning apparatus for vehicle
USD738996S1 (en) * 2013-12-06 2015-09-15 Keihin Thermal Technology Corporation Evaporator with cool storage function
US20150360534A1 (en) * 2014-06-17 2015-12-17 Keihin Thermal Technology Corporation Evaporator with cool storage function
US9297561B2 (en) * 2008-12-26 2016-03-29 Keihin Thermal Technology Corporation Evaporator with cool storage function
US20170305237A1 (en) * 2016-04-21 2017-10-26 Keihin Thermal Technology Corporation Evaporator and vehicular air conditioner using the same
US9803933B2 (en) 2013-06-26 2017-10-31 Sanden Holdings Corporation Cold storage medium container
FR3086046A1 (fr) * 2018-09-13 2020-03-20 Valeo Systemes Thermiques Echangeur de chaleur a reservoir de materiau a changement de phase
EP3519751A4 (en) * 2016-09-28 2020-06-24 The Coca-Cola Company SYSTEMS AND METHODS FOR COOLING ONE OR MORE BEVERAGE COMPONENTS WITH A RIBBED HEAT EXCHANGER
US10767937B2 (en) 2011-10-19 2020-09-08 Carrier Corporation Flattened tube finned heat exchanger and fabrication method

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JP2017090015A (ja) * 2015-11-16 2017-05-25 サンデン・オートモーティブクライメイトシステム株式会社 蓄冷熱交換器
CN106568239A (zh) * 2016-11-07 2017-04-19 上海加冷松芝汽车空调股份有限公司 一种蓄冷式蒸发器
JP2017116254A (ja) * 2017-02-08 2017-06-29 株式会社ケーヒン・サーマル・テクノロジー 蓄冷機能付きエバポレータ
FR3086045B1 (fr) * 2018-09-13 2020-08-07 Valeo Systemes Thermiques Echangeur de chaleur a reservoir de materiau a changement de phase et procede de fabrication associe
EP3628954B1 (fr) * 2019-09-11 2022-01-12 Valeo Systemes Thermiques-THS Échangeur de chaleur à réservoir de matériau à changement de phase et procédé de fabrication associé

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US9297561B2 (en) * 2008-12-26 2016-03-29 Keihin Thermal Technology Corporation Evaporator with cool storage function
US20100223949A1 (en) * 2009-03-06 2010-09-09 Showa Denko K.K. Evaporator with cool storage function
US20120042687A1 (en) * 2010-08-23 2012-02-23 Showa Denko K.K. Evaporator with cool storage function
US10220673B2 (en) 2011-05-04 2019-03-05 Hanon Systems Cold-storage heat exchanger
US20140069136A1 (en) * 2011-05-04 2014-03-13 Halla Visteon Climate Control Corp. Cold-storage heat exchanger
US9555687B2 (en) * 2011-05-04 2017-01-31 Hanon Systems Cold-storage heat exchanger
US20130047663A1 (en) * 2011-08-31 2013-02-28 Keihin Thermal Technology Corporation Evaporator with cool storage function
US9732996B2 (en) * 2011-08-31 2017-08-15 Keihin Thermal Technology Corporation Evaporator with cool storage function
US20130087316A1 (en) * 2011-10-06 2013-04-11 Visteon Global Technologies, Inc Thermal energy exchanger for a heating, ventilating, and air conditioning system
US9109841B2 (en) * 2011-10-06 2015-08-18 Halla Visteon Climate Control Corporation Air to refrigerant heat exchanger with phase change material
US10767937B2 (en) 2011-10-19 2020-09-08 Carrier Corporation Flattened tube finned heat exchanger and fabrication method
US11815318B2 (en) 2011-10-19 2023-11-14 Carrier Corporation Flattened tube finned heat exchanger and fabrication method
US9242530B2 (en) * 2011-10-28 2016-01-26 Hanon Systems Heat exchanger with phase change material manifolds
US20130105126A1 (en) * 2011-10-28 2013-05-02 Visteon Global Technologies, Inc. Thermal energy exchanger for a heating, ventilating, and air conditioning system
WO2013131772A1 (en) 2012-03-06 2013-09-12 Delphi Automotive Systems Luxembourg Sa Heat exchanger with two refrigerants
EP2636980A1 (en) * 2012-03-06 2013-09-11 Delphi Automotive Systems Luxembourg SA Heat exchanger with two refrigerants
US10352599B2 (en) * 2012-04-02 2019-07-16 Denso Corporation Evaporator
US20150068718A1 (en) * 2012-04-02 2015-03-12 Denso Corporation Evaporator
EP2653329A1 (en) * 2012-04-20 2013-10-23 Delphi Technologies, Inc. Evaporator for air conditioning with phase change material for a thermal syphon operation mode
US20140174121A1 (en) * 2012-12-25 2014-06-26 Keihin Thermal Technology Corporation Evaporator with cool storage function
US10006680B2 (en) * 2012-12-25 2018-06-26 Keihin Thermal Technology Corporation Evaporator with cool storage function
WO2014187317A1 (zh) * 2013-05-22 2014-11-27 杭州工电能源科技有限公司 一种相变蓄热装置、应用该装置的太阳能热利用系统及运行方式
US9803933B2 (en) 2013-06-26 2017-10-31 Sanden Holdings Corporation Cold storage medium container
USD738996S1 (en) * 2013-12-06 2015-09-15 Keihin Thermal Technology Corporation Evaporator with cool storage function
US20150241080A1 (en) * 2014-02-21 2015-08-27 Keihin Thermal Technology Corporation Air-conditioning apparatus for vehicle
US9855818B2 (en) * 2014-06-17 2018-01-02 Keihin Thermal Technology Corporation Evaporator with cool storage function
US20150360534A1 (en) * 2014-06-17 2015-12-17 Keihin Thermal Technology Corporation Evaporator with cool storage function
CN104406424A (zh) * 2014-12-10 2015-03-11 浙江大学 一种基于热介质温度的管翅式散热器
CN104406425A (zh) * 2014-12-10 2015-03-11 浙江大学 一种基于热介质流量的管翅式散热器
US20170305237A1 (en) * 2016-04-21 2017-10-26 Keihin Thermal Technology Corporation Evaporator and vehicular air conditioner using the same
EP3519751A4 (en) * 2016-09-28 2020-06-24 The Coca-Cola Company SYSTEMS AND METHODS FOR COOLING ONE OR MORE BEVERAGE COMPONENTS WITH A RIBBED HEAT EXCHANGER
US10976109B2 (en) * 2016-09-28 2021-04-13 The Coca-Cola Company Systems and methods for cooling one or more beverage components with a plate fin heat exchanger
FR3086046A1 (fr) * 2018-09-13 2020-03-20 Valeo Systemes Thermiques Echangeur de chaleur a reservoir de materiau a changement de phase

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DE102010055972A1 (de) 2011-08-25
CN102109254A (zh) 2011-06-29
JP2011149684A (ja) 2011-08-04
CN102109254B (zh) 2014-11-26

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